120211022202221 has 4 divisors (see below), whose sum is σ = 120211157948700. Its totient is φ = 120210886455744.

The previous prime is 120211022202133. The next prime is 120211022202283. The reversal of 120211022202221 is 122202220112021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36991271382025 + 83219750820196 = 6082045^2 + 9122486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120211022202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211022202193 and 120211022202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211022202421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66536126 + ... + 68318943.

It is an arithmetic number, because the mean of its divisors is an integer number (30052789487175).

Almost surely, 2^{120211022202221} is an apocalyptic number.

It is an amenable number.

120211022202221 is a deficient number, since it is larger than the sum of its proper divisors (135746479).

120211022202221 is an equidigital number, since it uses as much as digits as its factorization.

120211022202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135746478.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 120211022202221 its reverse (122202220112021), we get a palindrome (242413242314242).

The spelling of 120211022202221 in words is "one hundred twenty trillion, two hundred eleven billion, twenty-two million, two hundred two thousand, two hundred twenty-one".